Distribution conduit for lubrication systems



July 15, 1930. l M. KoEHL'ER 1,770,474

DISTRIBUTION CONDUIT FOR LUBRIQATION SYSTEMS Original Filed Jan. '7, 1927 Patented July 15, 193D MARCEL KOEHLER, or Panisgfrnnncn;iAssINon-troisooinirnAnoiirivinsennissaen N Amun :orLnvaimoisrnnnnrjsninn, rnnriongn ooivrPAiiiYfor,,Fai-'rivela4` "lji' f .,nIsTnIBUrijioNiooNnuiT Fon nuiancirfrionzssrsns original applicationie'aaaaary iszvgseiainol 159,7(32, and' iii Belgium April 22, fleas.' fniviiii and Vthis:application filedseptemberg', 192.8. Serialo. 308,555.`

My invention relates-to improvements iii l ubricatiiig-systems Yand more vp artieularly to 'lubricating systems of thetyfpe described and leible conduit iiiwliich :a 'metallic corevis ,claimed in my'Pateiit'f1,665,964c,:dated April 10, 1928 and inthe'oo-pending,application Serial No.'v 159,7 0.2, ifiledlannary, V1927,"of

which the present applicationv is a divisioir Y In the'draWiiig-'- 'F; i F ig. l isa transverse section throughiiexf ible conduit oriningtliessubject iatterjof our y present invention; v

Fig; 2`is` asimilar vievvYK of a modication; Fig. Slis a siin'il'ar vie'vv of another modifi- 'cation;,f 'f A H i Fig. 4 is a. fragmentary 'longitudinal section through: van embodiment of affiexible tube in 'which metallic sheaths areiitilized; T

` Inv the co-pending alp'plicatio'nA above inenk Y tioned `Ildisclosedf a systemiin Vwhich"lubrica- *"25 Y abs'ipuon utilizing',-riexibi-copaairgrile obj ectl of this `divisional application is to pro- V elient is contained in the said conduits "Zio ftioiiV Itookplace through va, closedy ,circuit by vvvide :specific forni ,'.tubing' suitalole forV 11S@ vrrvith our said system.

Acoordingjto Vvthel invention the capillary which protect it from external action, and such conduits may have the form of braided cotton tubes which aresuitably varnished.

A simpler construction vconsists in applying, on the capillary element, an adhesive protecting coating of varnish which Will not enter such elements when applied.

I preferably obtain this result by employing a varnish consisting of acetate of cellulose dissolved in acetone, which drys at once under proper conditions, and the capillary element will thus be Vformed in one piece with .the covering thereof, Which offers certain desirable advantages of construction.

To affordA greater strength against wear due to friction upon the surface of the tubes, as Well as a greater resistance to flexion, the tubes may consist vof successive layers of c ottoii or metal braid covered at the exterior i r ingrooms.A Thus:byinsuillation'ofthe?` y nish .under .pressure andv supplying air,`the

offthe'coats o'f'varnishf may/"substitute a metallic vcoating 'inforder to increase the ivith one 'or more coatsfof varnish.v For' one strength of the conduits which isI particularly by insulllation of thevarni"shV under pressure, l'

follloivedv'bya currentof hot air which the' varnish 'ivvillfbe' hardened, tliusfeliminah.

-ing all heating of the tubes'in furnaceso'r dryva'rnish 'Will befIfo'rcedy into thefinterstices 'liyliic'h' riiightl be produced fduring inanufa'c- ,tureofthe tubes and subsequentlycause leak- "lflie external metallic coating may consist of'a sheathing Vwhich is orm'edlofa tubular VVmetallic braiding,` which consists,. for ejiample, of bands formed of parallel irir'es, said bands being interwoven' in a manner known in the art, or lof'a, single metallic band which is, Wound in helicalfasliion, rWithja'slight play of one millimeter, 'orro metallic bandsivhich Cil have a. suitable cross section and arefsecared together, suclibeing 'Wound in helical Yfashion after the manner of Flexible tubing vvell known in the art.

Eso

i To increase'the, rigidity loftheltubes I may 'place Within orat lone' side of thecapillary element thereof,v one ,or `more metallic "Wires,

forex'a'm'ple, of 'stevehjto' prevent local deformation, of an V"excessive magnitude ivhich fi'netionwith these tubes, the outer sheathmay be furthersurrounded by armestructioa Inv the embodiment j of Fi 4 mythe metallic sheath may consist of ban s of 1 "rittble crossfsection 8 fitting intothe neighband in a manner well known to those 1 ""'illl inithe art. Y IIL-the embodiment of Fig. 1

metallic sheath consists of a band 9 wound in fashion and Whos/eed es are disn v dnspaccd relation, the wi th h of .the Ehud being such that the minimum radius of `em'vature desired for the tube lmay be obtained. It Mwill be noted that the radius 0f curvature willY vary inversely as' the width l f rof the saidband. The metallic sheath i "might likewise be composed of a braiding "ofzmetallic bands. e :To increase the rigidity of the said tubes, VMilitr ire uently subject to oscillation "'adrnpid Sliocqks, I may dispose, iii the interior fof the ca illary element and parallel i the `axis o `the tube, one or more steel 11 which act by their rigidity kto prey tubes 'from bending as shown in 'ig .i18,under conditions which could lead to 's -rptureofthe sheath or tube butwithout ,detracting from the capillary action thereof. if" Having described my invention what I y C new and desire to secure `by Letters i.,`-Pgtent is; i y I; In'alubri'c'ating system ofthe type deagton'e on the said sheathand a iiexible -me'- `stailic rotecting sheath surrounding the said varni Yed sheath. Y 3. In a lubricating system of the type det A scribed, 'a distribution conduit comprising,

`in combination, Va capillary element, a flexialayer of non-penertating varnish on the Said sheath and a protecting sheath consist- `ing ofa spirally wound continuous strip of metal surrounding the said varnished sheath.

tal-iig sheath, which maybe Varied in con-,

a distribution conduit comprisingf in combination, a capillary element, a. ilexible sheath braided on said capillar element, a layer of non-penetrating varnis on said sheath, a flexible metallicl protecting sheath surroundin the said varnished sheath and af deforma le stiifening memberiextending through the said'capillary element""for allowing said conduit to be bent and retained in varionssha Vistribution conduitfor a lubricating system of the type descrlbed, in combinations, capillary element, a flexible sheath braided on said ca illary element, a layer of f varnish on said s cath, and 'alflexible `rne- 7, the outer" tallicf protecting vsheath 'surrounding said varnished sheath. i A Y i In a distribution conduitioralubrieating system of the type described, in'colnbination, a",capi11ary, element, a 4flexible sheath braided on said capillary element, a layerof varnish consistin of a mixture offa *cellulosrerderivative jdjsso ved in acetone on thesaid sheath an'da `flexible metallic prtectin sheath surrounding the 'said 'varvnishe sheath. 'j 7 In 'a 'distribution' conduit for a lubricatingsystem of the type described, iny coinbination, a capilla element, a flexible 'sheath braided on said capillary element, a layer of varnishl on the said sheath,`and a protecting vsheath consisting of a spiral] wound continuous strip ofv metal fsurroiindyl ing4 tho-said varnished sheath. i

8 In ai distribution conduitfor a lubrieating system of the type described, in con bination, an capillary element, a deiblpe isheath braided on' said element, a layer. 1of varnish on said sheath, alilexible metallic protecting sheath" surrounding the said* var- 'shed4 sheath ,and 'la ,deformable stitleng. 05 member'exten'ding through the `said 'capilla element for permitting saidconduit ,to bel nt and retained in various shapes.

In testimony whereof I havesignedfthis specification. Y

' MARCEL KOEHLER.

a mixture of cellulose acetatedissolved in .ble sheath braided on said capillary element,

ist

4. In a lubricating system of the type described, a distribution conduit comprising, 

